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The norovirus outbreak among Californians at the Republican National Convention is not contained, with another case reported by state party officials Thursday.

The new person affected is not a delegate or an alternate, but rather a guest of the delegation. This is the first report of the highly contagious gastrointestinal virus spreading outside of the party’s staff. Previously, at least a dozen staff members were quarantined in their hotel rooms after showing symptoms of norovirus.

“It is imperative that if you show any symptoms of vomiting or diarrhea” you contact the state party immediately, Cynthia Bryant, the party’s executive director, emailed the 550-member delegation about the new case.

Bryant declined to identify the guest, citing privacy concerns, but said the person did not attend a delegation breakfast Thursday that was headlined by Sen. Tom Cotton and Rep. Darrell Issa.

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